Gas-relief device for batteries.



v v C.STA'UDT.

GAS RELIEF DEVICE FOR BATTERFES.

APPLICATION FILED JULY 16, I914.

Patnted Aug. 10,1915.

q a ATTORNEY UNITED STATES PATENT OFFICE.

CHARLES STAUDT, OF UNION HILL, NEW JERSEY, ASSIGNOR OF ONE-HALF 'IOCHARLES MEDER, OF NEW YORK, N. Y.

GAS-RELIEF DEVICE FOR BATTERIES.

Specification of Letters Patent.

Patented Aug. 10, 1915.

To all whom it may concern:

Be it known that I, CHARLES STAUDT, a citizen of the United States,residing at Union Hill, Hudson county, in the State of New Jersey, haveinvented certain new and useful Improvements in Gas-Relief Devices forBatteries, of which the following is a full, clear, and exactspecification.

My invention relates to improvements in means for relieving the internalor gas pressure occurring in electric batteries, and the same has forits object more particularly to provide a simple, efficient and reliabledevice which may be readily secured to a battery receptacle in order topermit of the escape of gas from said battery, while preventing theout-flow of liquid from said receptacle.

Further, said invention has for its object to provide a relief devicewhich may be readily applied to a battery receptacle in such a way thatits inner end, which contains the gas relief opening, will always beabove the level of the liquid, contained in said receptacle, regardlessof the position of said receptacle.

Further, said invention has for its object to provide a device of thecharacter described which, while permitting thefree exit of gas from theinterior of the receptacle, will effectively prevent the discharge ofliquid therethrough.

To the attainment of the aforesaid objects and ends, my inventionconsists in the novel details of construction, and in the combination,connection and arrangement of parts hereinafter more fully described andthen pointed out in the claims.

In the accompanying drawings, wherein like numerals of referenceindicate like parts,Figure 1 is a central vertical section of a storagebattery with one form of vent, constructed according to and embodying myinvention, applied thereto; and Fig. 2 is a central detail verticalsection of the relief device.

In said drawings 10 designates a storage battery comprising a receptacle11 which is preferably made of glass, rubber or other suitable materialnot affected by acid. The said receptacle 11 is provided adjacent to itsupper end with a partition 12, having a central screw-threaded openingtherein, and smaller openings arranged to each side of said centralscrew-threaded opening in which are secured binding posts 13, 14 havingtheir tition 12, and to each side of said opening are provided smalleropenings to accommodate the upper ends of the binding posts 13 14.

l8 denotes a gas relief device in the form of a plug having acylindrical bodv portion 19 provided at its lower end with a taperingpoint 20, and at its upper end with an enlarged portion 21, forming ashoulder, above which enlarged portion 21 is provided a head 22 which islarger in diameter than said enlarged portion 21 directly below thesame. The body portion 19 of the plug is provided directly above thetapering point 20 with screw threads 23 adapted to engage with theinteriorly threaded opening arranged in the center of the partition 12,in order to hold said plug duly secured in position. The body portion ofsaid plug 18 is provided directly above the screw threads 23 with atransverse passage 2 which extends entirely through the same, andcommunicates with a central longitudinal passage 25 extending from saidtransverse passage 2% downwardly to the end of the tapering point 20 ofthe plug.

Directly above the transverse passage 24: is arranged a shortertransverse passage 26 which is arranged parallel with, and in closeproximity to the transverse passage 24. The said transverse passage 26extends only to the center of the plug where it meets a second centrallongitudinal passage 27, arranged in line with the central transversepassage 25, and extending upwardly through the head 22 of the plug 18.

It is well known that in storage batteries the plates 14. are usuallyimmersed in an electrolyte which extends slightly above the upper edgeof said plates. In order to provide for the-escape of gas during thecharging period of the battery the plug 18 is so proportioned that itsinner or tapered point 20 will be in a horizontal plane slightly abovethe normal fluid level of the electrolyte in the battery. The interiorcapacity of the battery receptacle is such that when the fluid level isat about the height specified it will be at about the point indicated byA, and when the battery is laid upon any of its sides the fluid willarise to about the level indicated by the lines 13,0. In all of thepositions above described the end of the point 20 will be above thefluid level.

Any gas generated in the battery will thus always find free exit throughthe passages 25 and 24, and into the space provided in the batteryreceptacle above the partition 12, and below the-cover 17, from which itcan thence pass into the shorter transverse passage 26 through thelongitudinal passage 27 to the atmosphere.

Should by any chance a small amount of the liquid within the receptacleaccidentally find its way into the space between the partition 12 andthe cover 17, by way of the passages 25, 24, when the battery is repeat:edly agitated, or is placed upon its side, the said liquid will at oncebe returned through said passages 25, 24, to the interior of thereceptacle below the partition 12, when the battery is restored to itsproper vertical position.

Having thus described my invention, what I claim and desire to secure byLetters Patent is 1. A device of the class described, comprising a plugformed as a unitary structure having a transverse passage extendingtherethrough, a longitudinal passage extending from said transversepassage to one ent of said plug, a second transverse passage, and asecond longitudinal passage extending from said second transversepassage to the opposite end of said plug, substantially as specified.

2. A device of the class described, comprising a plug having atransverse passage extending therethrough, a longitudinal passageextending from said transverse passage to one end of said plug, a secondtransverse passage extending partially through said plug and arrangedparallel to said firstnamed transverse passage, and a secondlongitudinal passage extending from said second transverse of said plug,substantially as specified.

3. A device of the class described, comprising a plug having atransverse passage extending therethrough, a central longitudinalpassage extending from said transverse passage to one end of said plug,a second transverse passage extending partially through said plug, andarranged parallel to said rst-named transverse passage, and a secondlongitudinal passage, in line with passage to the opposite end saidfirst-named longitudinal passage, extending from said second transversepassage to the opposite end of said plug, substantially as specified.

4:. A device of the class described, comprising a plug having a head anda tapered point, and provided with a transverse passage extendingthrough said plug, a central longitudinal passage extending from saidtransverse passage to the end of said tapered point, a second transversepassage extending partially through said plug and arranged parallel tosaid first-named transverse passage, and a second longitudinal passagearranged in line with said central longitudinal passage and extendingfrom said second transverse passage through the head of said plug,substantially as specified.

5. A device of the class described, comprising a plug having an enlargedhead, a tapered point, and engaging means intermediate said head andpoint, said plug having a transverse passage extending therethrough, acentral longitudinal passage extending from said transverse passage andterminating at the end of said tapered point, a second transversepassage extending partially through said plug and arranged parallel tosaid first-named transverse passage, and a second central longitudinalpassage arranged in line with said first-named central, longitudinalpassage and extending from said second transverse passage through thehead of said plug, fied.

6. The combination of a battery receptacle having a cover provided witha centrally arranged opening, and a partition in said receptacle belowsaid cover having an opening therein in line with the opening in saidcover, with a plug having a plurality of parallel transverse passagestherein arranged intermediate said cover and said partition, a central,longitudinal passage extending from one of said transverse passages tothe substantially as specitudinal passage, in line with said firstnamedlongitudinal passage, extending from the other of said transversepassages through the exposed end of said plug, substantially asspecified.

Signed at the city of New York, in the county and State of New York,this 5th day of June, one thousand nine hundred and fourteen.

CHARLES STAUDT.

Witnesses:

CONRAD A. DIETERICH, JosEPH G. QUINN, Jr.

.105 lower end of said plug, and a second longi-

